Python
The Python Programming Language.
Python is a programming language that lets you work more quickly and integrate your systems more effectively. You can learn to use Python and see almost immediate gains in productivity and lower maintenance costs.
Python runs on Windows, Linux/Unix, Mac OS X, and has been ported to the Java and .NET virtual machines.
Python is free to use, even for commercial products, because of its OSI-approved open source license.
Basics of Python: To start with Openstack
In this post a brief introduction is given with a prerequisite that the reader should be familiar with programming concepts in some language (atleast C/C++/Java). This write-up covers some basic concepts,syntax and few specific things in python and it should enable the reader to understand the python-code in Openstack.
Unit-testing in Python
This post describes why unit-testing has become an indispensable part of application development and how to start with unit-testing in Python using py-unit.

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